Practice Test Geeks(CDC) Certified Dental Ceramist Practice Test
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Prosthetics Design & Fabrication Flashcards

7 cards from real CDC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Prosthetics Design & Fabrication flashcards as text

  1. The term 'sintering' in the context of zirconia fabrication refers to:

    Answer: A high-temperature consolidation process that densifies the pre-sintered zirconia blank

    Sintering fires the pre-sintered (chalk-state) zirconia at approximately 1450–1550°C, reducing porosity and increasing density and strength to its final form.

  2. When fabricating an implant-supported screw-retained crown, the access hole for the retaining screw should ideally be located:

    Answer: At the center of the occlusal surface or cingulum for anteriors

    Centering the screw access channel on the occlusal/cingulum maintains restoration strength and esthetics while allowing retrieval.

  3. Which laboratory technique is used to fabricate a custom incisal edge position and midline reference for an anterior ceramic restoration before wax-up?

    Answer: A diagnostic matrix from provisional restorations

    A matrix or stent fabricated from approved provisional restorations captures the verified midline, incisal length, and contours, which guide the laboratory wax-up.

  4. Which firing schedule parameter has the greatest influence on ceramic surface gloss after a glaze firing?

    Answer: Peak (hold) temperature and duration at the final glaze temperature

    The hold temperature and dwell time at the peak glaze temperature determine how much the ceramic surface flows, directly controlling final gloss and surface smoothness.

  5. A dental ceramist observes 'crawling' of the porcelain (localized pulling away from the metal surface) during PFM firing. The MOST likely cause is:

    Answer: Contamination of the metal surface with oil or organic material prior to opaque application

    Oil or organic contamination on the alloy surface prevents adequate bonding of the opaque porcelain, causing it to bead up and pull away during firing.

  6. In CAD/CAM milling of dental restorations, a 'full-contour' design approach means that:

    Answer: The restoration is milled to complete anatomical shape without layering additional ceramic

    Full-contour milling produces a restoration in its final anatomical form from a monolithic block, eliminating the need for veneering ceramic.

  7. The purpose of applying 'characterization stains' to a fully fired ceramic restoration before the final glaze is to:

    Answer: Enhance depth, color nuance, and life-like optical effects at the surface

    Surface characterization stains add subtle hue variations, crack lines, and optical depth that mimic natural tooth details for superior esthetics.